package com.atguigu.gulimall.gulimallauthserver.controller;

import com.alibaba.fastjson.TypeReference;
import com.atguigu.common.constant.AuthServerConstant;
import com.atguigu.common.exception.BizCodeEnume;
import com.atguigu.common.utils.R;
import com.atguigu.common.vo.MemberRespVo;
import com.atguigu.gulimall.gulimallauthserver.feign.MemberFeignService;
import com.atguigu.gulimall.gulimallauthserver.feign.ThirdPartFeignService;
import com.atguigu.gulimall.gulimallauthserver.utils.HttpUtils;
import com.atguigu.gulimall.gulimallauthserver.vo.UserLoginVo;
import com.atguigu.gulimall.gulimallauthserver.vo.UserRegistVo;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import javax.servlet.http.HttpSession;
import javax.validation.Valid;
import java.util.HashMap;
import java.util.Map;
import java.util.UUID;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;

@Controller
public class LoginController {
    @Autowired
    ThirdPartFeignService thirdPartFeignService;
    @Autowired
    StringRedisTemplate redisTemplate;

    @Autowired
    MemberFeignService memberFeignService;

    @ResponseBody
    @GetMapping("/sms/sendcode")
    public R sendCode(@RequestParam("phone") String phone ){

        String redisCode = redisTemplate.opsForValue().get(AuthServerConstant.SMS_CODE_CACHE_PREFIX + phone);

        if(!StringUtils.isEmpty(redisCode)){

            long l = Long.parseLong(redisCode.split("_")[1]);
            if(System.currentTimeMillis() - l<600000){
                //60s内不能再发
                return R.error(BizCodeEnume.SMS_CODE_EXCEPTION.getCode(),BizCodeEnume.SMS_CODE_EXCEPTION.getMsg());

            }
        }


        //TODO:1.接口防刷

        //2.验证码的再次校验 redis 存key-phone,value-code




        String code = UUID.randomUUID().toString().substring(0, 5)+"_"+System.currentTimeMillis();

        //redis缓存验证码
       redisTemplate.opsForValue().set(AuthServerConstant.SMS_CODE_CACHE_PREFIX+phone,code,10, TimeUnit.MINUTES);

        thirdPartFeignService.sendCode(phone,code.substring(0, 5));

        return R.ok();
    }

    /**
     * redirectAttributes 模拟重定向携带数据
     * @param userRegistVo
     * @param result
     * @param redirectAttributes
     * @return
     */
    @PostMapping("/regist")
    public String regist(@Valid UserRegistVo userRegistVo, BindingResult result,
                         RedirectAttributes redirectAttributes,
                         HttpSession session){
        //注册成功回到首页
        if(result.hasErrors()){

//            Map<String,String> errors = new HashMap<>();

//            result.getFieldErrors().stream().map(fieldError -> {
//                String field = fieldError.getField();
//                String defaultMessage = fieldError.getDefaultMessage();
//                errors.put(field,defaultMessage);
//                return
//            })

            Map<String, String> errors = result.getFieldErrors().stream().collect(Collectors.toMap(fieldError -> {
                return fieldError.getField();

            }, fieldError -> {
                return fieldError.getDefaultMessage();
            },(entity1,entity2)->{return entity1;}));

            redirectAttributes.addFlashAttribute("errors",errors);

//            model.addAttribute("errors",errors);

            return "redirect:http://auth.gulimall.com/reg.html";
        }

        //检验验证码
        String code = userRegistVo.getCode();
        String s = redisTemplate.opsForValue().get(AuthServerConstant.SMS_CODE_CACHE_PREFIX + userRegistVo.getPhone());

        if(!StringUtils.isEmpty(s)){

           if(code.equals( s.split("_")[0])){

               //删除验证码
               redisTemplate.delete(AuthServerConstant.SMS_CODE_CACHE_PREFIX + userRegistVo.getPhone());
               //验证通过，调用远程服务注册
               //TODO：feign
               R regist = memberFeignService.regist(userRegistVo);

               if(regist.getCode()==0){

                   //成功
                   return "redirect:http://auth.gulimall.com/login.html";
               }else {

                   Map<String,String> errors = new HashMap<>();

                   errors.put("msg",regist.getData("msg",new TypeReference<String>(){}));

                   redirectAttributes.addFlashAttribute("errors",errors);

                   return "redirect:http://auth.gulimall.com/reg.html";
               }


           }else {

               //验证不通过
               Map<String, String> errors = new HashMap<>();

               errors.put("code","验证码校验错误！");

               //校验出错，转发到注册页
               return  "redirect:http://auth.gulimall.com/reg.html";
           }


        }else {

            Map<String, String> errors = new HashMap<>();

            errors.put("code","验证码校验错误！");

            //校验出错，转发到注册页
            return  "redirect:http://auth.gulimall.com/reg.html";

        }


    }

    @PostMapping("/login")
    public String login(UserLoginVo vo,RedirectAttributes redirectAttributes,HttpSession session){

        //远程登录
        R r = memberFeignService.login(vo);


        if(r.getCode()==0){

            MemberRespVo data = r.getData("data", new TypeReference<MemberRespVo>() {
            });
            session.setAttribute(AuthServerConstant.LOGIN_USER,data);

            return "redirect:http://gulimall.com";
        }else {

            Map<String,String> errors = new HashMap();

            errors.put("msg",r.getData("msg",new TypeReference<String>(){}));

            redirectAttributes.addFlashAttribute("errors",errors);

            return "redirect:http://auth.gulimall.com/login.html";
        }

    }

    @GetMapping("/login.html")
    public String loginPage(HttpSession session){

        Object attribute = session.getAttribute("loginUser");
        if(attribute==null){

            return "login";
        }

        else {

            return "redirect:http://gulimall.com";
        }
    }


}
